Vacuum tube



June 11, L929. 0. w. PIKE VACUUM ,TUBE I Filed March 14, 1'95? Inventor Otis W. Pi ke,

His Attovney.

Patented June 11, 1929.

UNITED STATES PATENT OFFICE.

OTIS w. PIKE, OF SCHENEGTLDY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC The present invention relates to vacuum tubes and more particularly to an arrangement for supporting the electrodes in such tubes.

member of the tube.

ent invention.

Referring more particularly to the drawing, I have indicated at 1 an evacuated receptacle provided with the usual base portion 2 and a reentrant portion and stem 3. A cathode 4 is mounted in the tube and connected to a pair of leading-in wires 5 and 6 which extend through the stem 3. A control electrode or grid 7 surrounds the cathode 4: and is connected to aleading-in wire 8. A second rid 9, which may be used as a screening grid, surrounds grid 7 and is supported from a collar 10 which surrounds stem 3-. Grid 9 comprises a plurality of supporting wires 11 which carry at their outer ends a metal plate 11'. Short angular wires 12 are welded to the end portions of wires 11 and carry a pair of oppositely disposed, insulating glass rods or beads 13 at their outer ends. The anode or plate electrode 14 is also provided with short angular wires 15 which are welded to rods 16, the latter extending through radiating fins 17 on the anode mem- The novel features which I believe to .be characteristic of my invention are set forth with particularity in the appended claims. My invention itself, however, will best be understood from reference to the following specification when considered in connection with the accompanying drawing in which the single figure is a perspective view partly broken away of a vacuum tube or discharge device embodying the features of the pres- GOMPANY, A CORPORATION OF NEW YORK.

VACUUM TU BE.

Application filed March 14,1927. Serial No. 175,055.

into the insulating rods 13 and the anode is suspended therefrom. A potential may be applied to the anode 14 through a flexible leading-in wire 18 which extends through the the rods 16.

What I claim as new and desire to secure by Letters Patent of the United States, is,-

grids.

electrodes.

ber. The outer ends of wires 15 are fused 1. An electron discharge device compris ing an anode, cathode, control grid and screening grid, supporting means for the screening grid, a pair of oppositely disposed insulating beads supported at one end of said screening grid, and means for support- 7 ing the anode on said insulating beads.

2. An electron discharge device comprising an evacuated receptacle, an anode, a cathode and two grids mounted therein, and means for supporting the anode from one of said 3. An electron discharge device comprising an evacuated receptacle, an anode, a cathode and two grids mounted in said receptacle, and means for supporting the anode in spaced relation to the other electrodes, said 30 means comprising an insulatingbead connected to the anode and to one of the grid In witness whereof, I have hereunto set my hand this 11th day of March, 1927.

OTIS-W. PIKE. 

